2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <stelian@popies.net>, 1999-2000
6 * Stelian Pop <stelian@popies.net> - AlcĂ´ve <www.alcove.com>, 2000-2002
10 * Copyright (c) 1980, 1988, 1991, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static const char rcsid
[] =
40 "$Id: traverse.c,v 1.65 2005/01/25 13:33:44 stelian Exp $";
46 #include <sys/types.h>
53 #include <sys/param.h>
56 #ifdef HAVE_EXT2FS_EXT2_FS_H
57 #include <ext2fs/ext2_fs.h>
59 #include <linux/ext2_fs.h>
61 #include <ext2fs/ext2fs.h>
62 #include <bsdcompat.h>
63 #include <compaterr.h>
66 #include <sys/vnode.h>
69 #include <ufs/fsdir.h>
70 #include <ufs/inode.h>
72 #include <ufs/ufs/dir.h>
73 #include <ufs/ufs/dinode.h>
74 #include <ufs/ffs/fs.h>
75 #endif /* __linux__ */
77 #include <protocols/dumprestore.h>
81 #define HASDUMPEDFILE 0x1
82 #define HASSUBDIRS 0x2
85 typedef u_quad_t fsizeT
;
88 typedef quad_t fsizeT
;
95 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
96 int blocksize
, char *buf
, void *private));
98 static int dirindir
__P((dump_ino_t ino
, daddr_t blkno
, int level
, long *size
));
99 static void dmpindir
__P((dump_ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
100 static int searchdir
__P((dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
));
102 static void mapfileino
__P((dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
));
104 #ifdef HAVE_EXT2_JOURNAL_INUM
105 #define ext2_journal_ino(sb) (sb->s_journal_inum)
107 #define ext2_journal_ino(sb) (*((u_int32_t *)sb + 0x38))
109 #ifndef HAVE_EXT2_INO_T
110 typedef ino_t ext2_ino_t
;
113 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
114 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
116 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
117 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
119 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
120 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
122 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
123 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
126 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
127 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
128 EXT2_FEATURE_INCOMPAT_FILETYPE)
130 #ifndef EXT2_RESIZE_INO
131 #define EXT2_RESIZE_INO 7
133 #ifndef EXT2_FT_UNKNOWN
134 #define EXT2_FT_UNKNOWN 0
135 #define EXT2_FT_REG_FILE 1
136 #define EXT2_FT_DIR 2
137 #define EXT2_FT_CHRDEV 3
138 #define EXT2_FT_BLKDEV 4
139 #define EXT2_FT_FIFO 5
140 #define EXT2_FT_SOCK 6
141 #define EXT2_FT_SYMLINK 7
142 #define EXT2_FT_MAX 8
145 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
149 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
151 struct ext2_super_block
*es
= (*fs
)->super
;
152 dump_ino_t journal_ino
= ext2_journal_ino(es
);
154 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
155 msg("This is a journal, not a filesystem!\n");
156 retval
= EXT2_ET_UNSUPP_FEATURE
;
159 else if ((retval
= es
->s_feature_incompat
&
160 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
161 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
162 msg("Unsupported feature(s) 0x%x in filesystem\n",
164 retval
= EXT2_ET_UNSUPP_FEATURE
;
168 if (es
->s_feature_compat
&
169 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
171 do_exclude_ino(journal_ino
, "journal inode");
172 do_exclude_ino(EXT2_RESIZE_INO
, "resize inode");
179 * This is an estimation of the number of TP_BSIZE blocks in the file.
180 * It estimates the number of blocks in files with holes by assuming
181 * that all of the blocks accounted for by di_blocks are data blocks
182 * (when some of the blocks are usually used for indirect pointers);
183 * hence the estimate may be high.
186 blockest(struct dinode
const *dp
)
188 long blkest
, sizeest
;
192 * dp->di_size is the size of the file in bytes.
193 * dp->di_blocks stores the number of sectors actually in the file.
194 * If there are more sectors than the size would indicate, this just
195 * means that there are indirect blocks in the file or unused
196 * sectors in the last file block; we can safely ignore these
197 * (blkest = sizeest below).
198 * If the file is bigger than the number of sectors would indicate,
199 * then the file has holes in it. In this case we must use the
200 * block count to estimate the number of data blocks used, but
201 * we use the actual size for estimating the number of indirect
202 * dump blocks (sizeest vs. blkest in the indirect block
205 blkest
= howmany((u_quad_t
)dp
->di_blocks
* 512, fs
->blocksize
) * (fs
->blocksize
/ TP_BSIZE
);
206 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
207 sizeest
= howmany(i_size
, fs
->blocksize
) * (fs
->blocksize
/ TP_BSIZE
);
208 if (blkest
> sizeest
)
211 if ((dp
->di_mode
& IFMT
) == IFDIR
) {
213 * for directories, assume only half of space is filled
217 sizeest
= sizeest
/ 2;
219 if (i_size
> (u_quad_t
)fs
->blocksize
* NDADDR
) {
220 /* calculate the number of indirect blocks on the dump tape */
222 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
226 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
227 /* calculate the number of indirect blocks on the dump tape */
229 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
236 /* Auxiliary macro to pick up files changed since previous dump. */
237 #define CSINCE(dp, t) \
238 ((dp)->di_ctime >= (t))
239 #define MSINCE(dp, t) \
240 ((dp)->di_mtime >= (t))
241 #define CHANGEDSINCE(dp, t) \
242 (CSINCE(dp, t) || MSINCE(dp, t))
244 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
246 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
248 #define NODUMP_FLAG(dp) 0
251 /* The WANTTODUMP macro decides whether a file should be dumped. */
252 #define WANTTODUMP(dp, ino) \
253 (CHANGEDSINCE(dp, ((u_int32_t)spcl.c_ddate)) && \
254 (!NODUMP_FLAG(dp)) && \
258 * Determine if given inode should be dumped. "dp" must either point to a
259 * copy of the given inode, or be NULL (in which case it is fetched.)
262 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
267 * Skip inode if we've already marked it for dumping
269 if (TSTINO(ino
, usedinomap
))
273 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
276 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
280 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
281 * used map. All inode but dirs who have the nodump attribute go
284 SETINO(ino
, usedinomap
);
287 do_exclude_ino(ino
, "nodump attribute");
290 SETINO(ino
, dumpdirmap
);
291 if (WANTTODUMP(dp
, ino
)) {
292 SETINO(ino
, dumpinomap
);
293 if (!MSINCE(dp
, (u_int32_t
)spcl
.c_ddate
))
294 SETINO(ino
, metainomap
);
295 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
298 *tapesize
+= blockest(dp
);
302 if (exclude_ino(ino
))
303 CLRINO(ino
, usedinomap
);
311 * Walk the inode list for a filesystem to find all allocated inodes
312 * that have been modified since the previous dump time. Also, find all
313 * the directories in the filesystem.
317 mapfiles(UNUSED(dump_ino_t maxino
), long *tapesize
)
320 int anydirskipped
= 0;
321 ext2_inode_scan scan
;
323 struct ext2_inode inode
;
326 * We use libext2fs's inode scanning routines, which are particularly
327 * robust. (Note that getino cannot return an error.)
329 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
331 com_err(disk
, err
, "while opening inodes\n");
335 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
336 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
339 com_err(disk
, err
, "while scanning inode #%ld\n",
347 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
350 ext2fs_close_inode_scan(scan
);
353 * Restore gets very upset if the root is not dumped,
354 * so ensure that it always is dumped.
356 SETINO(ROOTINO
, dumpinomap
);
357 return (anydirskipped
);
361 mapfiles(dump_ino_t maxino
, long *tapesize
)
364 int anydirskipped
= 0;
366 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
367 mapfileino(ino
, tapesize
, &anydirskipped
);
370 * Restore gets very upset if the root is not dumped,
371 * so ensure that it always is dumped.
373 SETINO(ROOTINO
, dumpinomap
);
374 return (anydirskipped
);
376 #endif /* __linux__ */
380 maponefile(UNUSED(dump_ino_t maxino
), long *tapesize
, char *directory
)
384 char dir_name
[MAXPATHLEN
];
385 int i
, anydirskipped
= 0;
388 * Mark every directory in the path as being dumped
390 for (i
= 0; i
< (int)strlen (directory
); i
++) {
391 if (directory
[i
] == '/') {
392 strncpy (dir_name
, directory
, i
);
394 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
,
397 com_err(disk
, retval
,
398 "while translating %s", dir_name
);
401 mapfileino((dump_ino_t
) dir_ino
, 0,
402 tapesize
, &anydirskipped
);
406 * Mark the final directory
408 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
410 com_err(disk
, retval
, "while translating %s", directory
);
413 mapfileino((dump_ino_t
)dir_ino
, 0, tapesize
, &anydirskipped
);
415 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
418 * Restore gets very upset if the root is not dumped,
419 * so ensure that it always is dumped.
421 SETINO(ROOTINO
, dumpdirmap
);
422 return anydirskipped
;
424 #endif /* __linux__ */
427 struct mapfile_context
{
433 mapfilesindir(struct ext2_dir_entry
*dirent
, UNUSED(int offset
),
434 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
436 struct dinode
const *dp
;
439 struct mapfile_context
*mfc
;
443 mfc
= (struct mapfile_context
*)private;
444 dp
= getino(dirent
->inode
);
446 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
448 mode
= dp
->di_mode
& IFMT
;
449 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
450 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
451 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
452 ( dirent
->name_len
& 0xFF ) != 2)) {
453 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
454 mapfilesindir
, private);
465 * Walk the inode list for a filesystem to find all allocated inodes
466 * that have been modified since the previous dump time. Also, find all
467 * the directories in the filesystem.
470 mapfilesfromdir(UNUSED(dump_ino_t maxino
), long *tapesize
, char *directory
)
473 struct mapfile_context mfc
;
475 char dir_name
[MAXPATHLEN
];
476 int i
, anydirskipped
= 0;
479 * Mark every directory in the path as being dumped
481 for (i
= 0; i
< (int)strlen (directory
); i
++) {
482 if (directory
[i
] == '/') {
483 strncpy (dir_name
, directory
, i
);
485 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
488 com_err(disk
, retval
, "while translating %s",
492 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
496 * Mark the final directory
498 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
500 com_err(disk
, retval
, "while translating %s", directory
);
503 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
505 mfc
.tapesize
= tapesize
;
506 mfc
.anydirskipped
= &anydirskipped
;
507 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
511 com_err(disk
, retval
, "while mapping files in %s", directory
);
515 * Ensure that the root inode actually appears in the file list
518 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
520 * Restore gets very upset if the root is not dumped,
521 * so ensure that it always is dumped.
523 SETINO(ROOTINO
, dumpinomap
);
524 return anydirskipped
;
529 struct mapdirs_context
{
539 * Scan each directory on the filesystem to see if it has any modified
540 * files in it. If it does, and has not already been added to the dump
541 * list (because it was itself modified), then add it. If a directory
542 * has not been modified itself, contains no modified files and has no
543 * subdirectories, then it can be deleted from the dump list and from
544 * the list of directories. By deleting it from the list of directories,
545 * its parent may now qualify for the same treatment on this or a later
546 * pass using this algorithm.
549 mapdirs(dump_ino_t maxino
, long *tapesize
)
559 struct mapdirs_context mdc
;
561 int ret
, change
= 0, nodump
;
563 isdir
= 0; /* XXX just to get gcc to shut up */
564 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
565 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
570 * If dir has been removed from the used map, it's either
571 * because it had the nodump flag, or it herited it from
572 * its parent. A directory can't be in dumpinomap if not
573 * in usedinomap, but we have to go through it anyway
574 * to propagate the nodump attribute.
576 nodump
= (TSTINO(ino
, usedinomap
) == 0);
577 if ((isdir
& 1) == 0 ||
578 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
585 mdc
.tapesize
= tapesize
;
586 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
587 #else /* __linux__ */
588 filesize
= dp
->di_size
;
589 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
590 if (dp
->di_db
[i
] != 0)
591 ret
|= searchdir(ino
, dp
->di_db
[i
],
592 (long)dblksize(sblock
, dp
, i
),
594 if (ret
& HASDUMPEDFILE
)
597 filesize
-= sblock
->fs_bsize
;
599 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
600 if (dp
->di_ib
[i
] == 0)
602 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
604 #endif /* __linux__ */
605 if (ret
& HASDUMPEDFILE
) {
606 SETINO(ino
, dumpinomap
);
607 *tapesize
+= blockest(dp
);
612 if (ret
& HASSUBDIRS
)
613 change
= 1; /* subdirs have inherited nodump */
614 CLRINO(ino
, dumpdirmap
);
615 } else if ((ret
& HASSUBDIRS
) == 0) {
616 if (!TSTINO(ino
, dumpinomap
)) {
617 CLRINO(ino
, dumpdirmap
);
627 * Read indirect blocks, and pass the data blocks to be searched
628 * as directories. Quit as soon as any entry is found that will
629 * require the directory to be dumped.
632 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
636 daddr_t idblk
[MAXNINDIR
];
638 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
639 if (ind_level
<= 0) {
640 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
643 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
645 if (ret
& HASDUMPEDFILE
)
648 *filesize
-= sblock
->fs_bsize
;
653 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
656 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
660 #endif /* !__linux__ */
663 * Scan a disk block containing directory information looking to see if
664 * any of the entries are on the dump list and to see if the directory
665 * contains any subdirectories.
669 searchdir(struct ext2_dir_entry
*dp
, UNUSED(int offset
),
670 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
672 struct mapdirs_context
*mdc
;
677 mdc
= (struct mapdirs_context
*)private;
679 tapesize
= mdc
->tapesize
;
683 if (dp
->name
[0] == '.') {
684 if (( dp
->name_len
& 0xFF ) == 1)
686 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
690 ip
= getino(dp
->inode
);
691 if (TSTINO(dp
->inode
, dumpinomap
)) {
692 CLRINO(dp
->inode
, dumpinomap
);
693 *tapesize
-= blockest(ip
);
695 /* Add dir back to the dir map and remove from
696 * usedinomap to propagate nodump */
697 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
698 SETINO(dp
->inode
, dumpdirmap
);
699 CLRINO(dp
->inode
, usedinomap
);
703 if (TSTINO(dp
->inode
, dumpinomap
)) {
704 *ret
|= HASDUMPEDFILE
;
705 if (*ret
& HASSUBDIRS
)
708 if (TSTINO(dp
->inode
, dumpdirmap
)) {
710 if (*ret
& HASDUMPEDFILE
)
717 #else /* __linux__ */
720 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
726 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
729 for (loc
= 0; loc
< size
; ) {
730 dp
= (struct direct
*)(dblk
+ loc
);
731 if (dp
->d_reclen
== 0) {
732 msg("corrupted directory, inumber %d\n", ino
);
738 if (dp
->d_name
[0] == '.') {
739 if (dp
->d_name
[1] == '\0')
741 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
744 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
745 ret
|= HASDUMPEDFILE
;
746 if (ret
& HASSUBDIRS
)
749 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
751 if (ret
& HASDUMPEDFILE
)
757 #endif /* __linux__ */
761 struct block_context
{
770 * Dump a block to the tape
773 dumponeblock(UNUSED(ext2_filsys fs
), blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
774 UNUSED(blk_t ref_block
), UNUSED(int ref_offset
), void * private)
776 struct block_context
*p
;
779 if (blockcnt
< NDADDR
)
781 p
= (struct block_context
*)private;
782 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
783 p
->buf
[p
->cnt
++] = 0;
784 if (p
->cnt
== p
->max
) {
785 blksout (p
->buf
, p
->cnt
, p
->ino
);
789 p
->buf
[p
->cnt
++] = *blocknr
;
790 if (p
->cnt
== p
->max
) {
791 blksout (p
->buf
, p
->cnt
, p
->ino
);
794 p
->next_block
= blockcnt
+ 1;
800 * Dump passes 3 and 4.
802 * Dump the contents of an inode to tape.
805 dumpino(struct dinode
*dp
, dump_ino_t ino
, int metaonly
)
808 fsizeT size
, remaining
;
810 struct new_bsd_inode nbi
;
813 struct block_context bc
;
822 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
826 dumpmap(dumpinomap
, TS_BITS
, ino
);
828 CLRINO(ino
, dumpinomap
);
830 memset(&nbi
, 0, sizeof(nbi
));
831 nbi
.di_mode
= dp
->di_mode
;
832 nbi
.di_nlink
= dp
->di_nlink
;
833 nbi
.di_ouid
= dp
->di_uid
;
834 nbi
.di_ogid
= dp
->di_gid
;
835 nbi
.di_size
= i_size
;
836 nbi
.di_atime
.tv_sec
= dp
->di_atime
;
837 nbi
.di_mtime
.tv_sec
= dp
->di_mtime
;
838 nbi
.di_ctime
.tv_sec
= dp
->di_ctime
;
839 memmove(&nbi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
840 nbi
.di_flags
= dp
->di_flags
;
841 nbi
.di_blocks
= dp
->di_blocks
;
842 nbi
.di_gen
= dp
->di_gen
;
843 nbi
.di_uid
= (((int32_t)dp
->di_uidhigh
) << 16) | dp
->di_uid
;
844 nbi
.di_gid
= (((int32_t)dp
->di_gidhigh
) << 16) | dp
->di_gid
;
846 msg("ACLs in inode #%ld won't be dumped\n", (long)ino
);
847 memmove(&spcl
.c_dinode
, &nbi
, sizeof(nbi
));
848 #else /* __linux__ */
850 #endif /* __linux__ */
851 spcl
.c_type
= TS_INODE
;
854 if (metaonly
&& (dp
->di_mode
& S_IFMT
)) {
855 spcl
.c_flags
|= DR_METAONLY
;
858 spcl
.c_flags
&= ~DR_METAONLY
;
862 switch (dp
->di_mode
& S_IFMT
) {
872 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
878 * Check for short symbolic link.
882 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
886 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
887 buf
[dp
->di_size
] = '\0';
891 #endif /* __linux__ */
893 if (dp
->di_size
> 0 &&
894 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
898 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
899 buf
[dp
->di_size
] = '\0';
922 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
925 if (i_size
> (u_quad_t
)NDADDR
* sblock
->fs_bsize
)
927 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
929 cnt
= NDADDR
* sblock
->fs_frag
;
932 cnt
= howmany(i_size
, sblock
->fs_fsize
);
933 blksout(&dp
->di_db
[0], cnt
, ino
);
934 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
937 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
938 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
941 bc
.next_block
= NDADDR
;
943 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
944 /* deal with holes at the end of the inode */
945 if (i_size
> ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
) {
946 remaining
= i_size
- ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
;
947 for (i
= 0; i
< (int)howmany(remaining
, sblock
->fs_fsize
); i
++) {
948 bc
.buf
[bc
.cnt
++] = 0;
949 if (bc
.cnt
== bc
.max
) {
950 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
956 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
960 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
961 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
970 struct convert_dir_context
{
978 * This function converts an ext2fs directory entry to the BSD format.
980 * Basically, it adds a null-character at the end of the name, recomputes the
981 * size of the entry, and creates it in a temporary buffer
984 convert_dir(struct ext2_dir_entry
*dirent
, UNUSED(int offset
),
985 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
987 struct convert_dir_context
*p
;
991 /* do not save entries to excluded inodes */
992 if (exclude_ino(dirent
->inode
))
995 p
= (struct convert_dir_context
*)private;
997 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
998 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
999 dp
= (struct direct
*)(p
->buf
+ p
->prev_offset
);
1000 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
1001 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
1004 dp
= (struct direct
*)(p
->buf
+ p
->offset
);
1005 dp
->d_ino
= dirent
->inode
;
1006 dp
->d_reclen
= reclen
;
1007 dp
->d_namlen
= dirent
->name_len
& 0xFF;
1008 switch ((dirent
->name_len
& 0xFF00) >> 8) {
1010 dp
->d_type
= DT_UNKNOWN
;
1012 case EXT2_FT_REG_FILE
:
1013 dp
->d_type
= DT_REG
;
1016 dp
->d_type
= DT_DIR
;
1018 case EXT2_FT_CHRDEV
:
1019 dp
->d_type
= DT_CHR
;
1021 case EXT2_FT_BLKDEV
:
1022 dp
->d_type
= DT_BLK
;
1025 dp
->d_type
= DT_FIFO
;
1028 dp
->d_type
= DT_SOCK
;
1030 case EXT2_FT_SYMLINK
:
1031 dp
->d_type
= DT_LNK
;
1034 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
1035 dp
->d_name
[dp
->d_namlen
] = '\0';
1036 p
->prev_offset
= p
->offset
;
1037 p
->offset
+= reclen
;
1045 * Dumps a directory to tape after converting it to the BSD format
1048 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
1052 struct new_bsd_inode nbi
;
1053 struct convert_dir_context cdc
;
1055 struct ext2_dir_entry
*de
;
1060 dumpmap(dumpinomap
, TS_BITS
, ino
);
1062 CLRINO(ino
, dumpinomap
);
1065 * Convert the directory to the BSD format
1067 /* Allocate a buffer for the conversion (twice the size of the
1068 ext2fs directory to avoid problems ;-) */
1069 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
1070 if (cdc
.buf
== NULL
)
1071 err(1, "Cannot allocate buffer to convert directory #%lu\n",
1072 (unsigned long)ino
);
1074 cdc
.prev_offset
= 0;
1075 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
1076 /* Do the conversion */
1077 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
1079 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
1082 /* Fix the last entry */
1083 if ((cdc
.offset
% cdc
.bs
) != 0) {
1084 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
1085 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1086 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1089 dir_size
= cdc
.offset
;
1092 memset(&nbi
, 0, sizeof(nbi
));
1093 nbi
.di_mode
= dp
->di_mode
;
1094 nbi
.di_nlink
= dp
->di_nlink
;
1095 nbi
.di_ouid
= dp
->di_uid
;
1096 nbi
.di_ogid
= dp
->di_gid
;
1097 nbi
.di_size
= dir_size
; /* (u_quad_t)dp->di_size; */
1098 nbi
.di_atime
.tv_sec
= dp
->di_atime
;
1099 nbi
.di_mtime
.tv_sec
= dp
->di_mtime
;
1100 nbi
.di_ctime
.tv_sec
= dp
->di_ctime
;
1101 memmove(&nbi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
1102 nbi
.di_flags
= dp
->di_flags
;
1103 nbi
.di_blocks
= dp
->di_blocks
;
1104 nbi
.di_gen
= dp
->di_gen
;
1105 nbi
.di_uid
= (((int32_t)dp
->di_uidhigh
) << 16) | dp
->di_uid
;
1106 nbi
.di_gid
= (((int32_t)dp
->di_gidhigh
) << 16) | dp
->di_gid
;
1107 if (dp
->di_file_acl
)
1108 msg("ACLs in inode #%ld won't be dumped\n", (long)ino
);
1109 memmove(&spcl
.c_dinode
, &nbi
, sizeof(nbi
));
1110 #else /* __linux__ */
1111 spcl
.c_dinode
= *dp
;
1112 #endif /* __linux__ */
1113 spcl
.c_type
= TS_INODE
;
1115 switch (dp
->di_mode
& S_IFMT
) {
1126 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1131 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1132 dp
->di_mode
& IFMT
, ino
);
1135 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1139 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1141 spcl
.c_type
= TS_ADDR
;
1144 (void)free(cdc
.buf
);
1146 #endif /* __linux__ */
1150 * Read indirect blocks, and pass the data blocks to be dumped.
1153 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1160 daddr_t idblk
[MAXNINDIR
];
1163 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1166 * My RedHat 4.0 system doesn't have these flags; I haven't
1167 * upgraded e2fsprogs yet
1169 #if defined(EXT2_FLAG_SWAP_BYTES)
1170 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1171 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1174 max
= sblock
->fs_bsize
>> 2;
1175 swapme
= (blk_t
*) idblk
;
1176 for (i
= 0; i
< max
; i
++, swapme
++)
1177 *swapme
= ext2fs_swab32(*swapme
);
1179 #endif /* __linux__ */
1181 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1182 if (ind_level
<= 0) {
1183 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1184 cnt
= howmany(*size
, sblock
->fs_fsize
);
1187 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1189 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1191 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1192 blksout(&idblk
[0], cnt
, ino
);
1196 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1197 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1205 * Collect up the data into tape record sized buffers and output them.
1208 blksout(blk_t
*blkp
, int frags
, dump_ino_t ino
)
1211 int i
, j
, count
, blks
, tbperdb
;
1213 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1214 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1215 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1216 if (i
+ TP_NINDIR
> blks
)
1219 count
= i
+ TP_NINDIR
;
1220 for (j
= i
; j
< count
; j
++)
1221 if (blkp
[j
/ tbperdb
] != 0)
1222 spcl
.c_addr
[j
- i
] = 1;
1224 spcl
.c_addr
[j
- i
] = 0;
1225 spcl
.c_count
= count
- i
;
1227 bp
= &blkp
[i
/ tbperdb
];
1228 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1230 if (j
+ tbperdb
<= count
)
1231 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1233 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1236 spcl
.c_type
= TS_ADDR
;
1241 * Dump a map to the tape.
1244 dumpmap(char *map
, int type
, dump_ino_t ino
)
1250 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1251 spcl
.c_dinode
.di_size
= mapsize
;
1253 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1257 #if defined(__linux__) && !defined(int32_t)
1258 #define int32_t __s32
1262 * Compute and fill in checksum information.
1265 mkchecksum(union u_spcl
*tmpspcl
)
1267 int32_t sum
, cnt
, *lp
;
1269 tmpspcl
->s_spcl
.c_checksum
= 0;
1270 lp
= (int32_t *)&tmpspcl
->s_spcl
;
1272 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1273 while (--cnt
>= 0) {
1279 tmpspcl
->s_spcl
.c_checksum
= CHECKSUM
- sum
;
1283 * Write a header record to the dump tape.
1286 writeheader(dump_ino_t ino
)
1288 spcl
.c_inumber
= ino
;
1289 spcl
.c_magic
= NFS_MAGIC
;
1290 mkchecksum((union u_spcl
*)&spcl
);
1291 writerec((char *)&spcl
, 1);
1296 getino(dump_ino_t inum
)
1298 static struct dinode dinode
;
1302 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1304 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1309 #else /* __linux__ */
1311 getino(dump_ino_t inum
)
1313 static daddr_t minino
, maxino
;
1314 static struct dinode inoblock
[MAXINOPB
];
1317 if (inum
>= minino
&& inum
< maxino
)
1318 return (&inoblock
[inum
- minino
]);
1319 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1320 (int)sblock
->fs_bsize
);
1321 minino
= inum
- (inum
% INOPB(sblock
));
1322 maxino
= minino
+ INOPB(sblock
);
1323 return (&inoblock
[inum
- minino
]);
1325 #endif /* __linux__ */
1328 * Read a chunk of data from the disk.
1329 * Try to recover from hard errors by reading in sector sized pieces.
1330 * Error recovery is attempted at most BREADEMAX times before seeking
1331 * consent from the operator to continue.
1333 int breaderrors
= 0;
1336 bread(ext2_loff_t blkno
, char *buf
, int size
)
1342 if (ext2fs_llseek(diskfd
, (blkno
<< dev_bshift
), 0) !=
1343 (blkno
<< dev_bshift
))
1345 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1346 ((off_t
)blkno
<< dev_bshift
))
1348 msg("bread: lseek fails\n");
1349 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1351 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1353 * Trying to read the final fragment.
1355 * NB - dump only works in TP_BSIZE blocks, hence
1356 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1357 * It should be smarter about not actually trying to
1358 * read more than it can get, but for the time being
1359 * we punt and scale back the read only when it gets
1360 * us into trouble. (mkm 9/25/83)
1366 msg("read error from %s: %s: [block %d, ext2blk %d]: count=%d\n",
1367 disk
, strerror(errno
), blkno
,
1368 dbtofsb(sblock
, blkno
), size
);
1370 msg("short read error from %s: [block %d, ext2blk %d]: count=%d, got=%d\n",
1371 disk
, blkno
, dbtofsb(sblock
, blkno
), size
, cnt
);
1372 if (breademax
&& ++breaderrors
> breademax
) {
1373 msg("More than %d block read errors from %d\n",
1375 broadcast("DUMP IS AILING!\n");
1376 msg("This is an unrecoverable error.\n");
1377 if (!query("Do you want to attempt to continue?")){
1384 * Zero buffer, then try to read each sector of buffer separately.
1386 memset(buf
, 0, size
);
1387 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1389 if (ext2fs_llseek(diskfd
, (blkno
<< dev_bshift
), 0) !=
1390 (blkno
<< dev_bshift
))
1392 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1393 ((off_t
)blkno
<< dev_bshift
))
1395 msg("bread: lseek2 fails!\n");
1396 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1399 msg("read error from %s: %s: [sector %d, ext2blk %d]: count=%d\n",
1400 disk
, strerror(errno
), blkno
,
1401 dbtofsb(sblock
, blkno
), dev_bsize
);
1404 msg("short read error from %s: [sector %d, ext2blk %d]: count=%d, got=%d\n",
1405 disk
, blkno
, dbtofsb(sblock
, blkno
), dev_bsize
, cnt
);